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Anonymous Poster

Paste Filler That Can Withstand 720F?

01/24/2008 3:58 PM

Can anyone refer me a paste grade (filler) product that will bond well with most metal substrates and will not be affected by temperatures a bit over 720F?

I know chemical contact will not be an issue here, and neither would abrasion, but I am aware that epoxies will carbonize over 500F, and I have a need to apply a paste grade filler material in different areas. I imagine an inorganic nature is necessary.

Thanks in advance!

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#1

Re: Paste Filler That Can Withstand 720F?

01/24/2008 4:16 PM

Without knowing your exact application, I can suggest you look at Sauereisen Cements.

www.sauereisen.com

You might have to give them a call to check on exact properties, but I've used them over 2000F.

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Associate

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#2

Re: Paste Filler That Can Withstand 720F?

01/24/2008 4:31 PM

Not sure about inorganics, but you are certainly right about the epoxy limits.

I have heard in the industry that Silicates would be your best choice, but I have no clue as to what product would serve you.

Good Luck!

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Anonymous Poster
#3

Re: Paste Filler That Can Withstand 720F?

01/24/2008 11:20 PM

sodium silicate's are used as "Stove Cement"

Commonly used around wood stoves to seal the joints, in cast fireplaces. And also to fix oil stove combustion chambers"Glory holes". Available from many building supply, and especially fireplace stores. The finer grades work the best, in my experience, you can use glass matting, with it also, years ago Asbestos matting was used. Sodium silicate, is also used in many slug baits --- works to seal very fine cracks.

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Anonymous Poster
#4

Re: Paste Filler That Can Withstand 720F?

01/25/2008 4:00 AM

Try using 'Hi-Temp LAB-METAL' www.AlvinProducts.com o.k. for temperatures upto 1000F

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#5

Re: Paste Filler That Can Withstand 720F?

01/25/2008 4:42 AM

How about fire cement? It is used to join bricks used in refractory furnaces.

In the UK, the heritage railway sector uses loads of it when replacing and repairing brick arches in locomotive fireboxes.

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#13
In reply to #5

Re: Paste Filler That Can Withstand 720F?

01/26/2008 6:00 AM

Fireclay Putty- Simplest and readily available.

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#6

Re: Paste Filler That Can Withstand 720F?

01/25/2008 6:49 AM

You might check JB Weld. I know it works well on cast iron exhaust headers and they can get hot enough to glow red.

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#10
In reply to #6

Re: Paste Filler That Can Withstand 720F?

01/25/2008 12:20 PM

J-B WELD is warranted to 600F according to the packaging that comes with it.

I have used it on engine blocks at the exhaust port where the temp was above this with no issues. I guess usage of it would depend on vibration and flex in your usage.

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#7

Re: Paste Filler That Can Withstand 720F?

01/25/2008 7:07 AM

A lot would depend on the end use. Does it vibrate? is it mobile or get banged around? a lot of cements will crumble or fall out if subjected to these. Please explain the enviroment this will be used in.

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#8

Re: Paste Filler That Can Withstand 720F?

01/25/2008 7:15 AM

JB weild will work I've used it to fill seal wear on shafts and then pwht to about 1150 deg.

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#9

Re: Paste Filler That Can Withstand 720F?

01/25/2008 8:40 AM

Try Litharge and Glycerin makes an almost permanent high temp bond has been used on threaded pipe joints for a long time.

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#11

Re: Paste Filler That Can Withstand 720F?

01/25/2008 3:17 PM

I would suspect that most ceramics could work as a binder. Perhaps even fireclays.

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#12

Re: Paste Filler That Can Withstand 720F?

01/25/2008 3:32 PM

You should talk to the guys at Henkel. They have all sorts of high temp goo

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